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Objective Questions

Latest HPCL Operation Technician Exam Question (Objective Questions), MCQ in English

Subjects : General Aptitude, Chemical

Question Bank HPCL Operation Technician Exam (Chemical) - English

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General Aptitude

Question 1Single Answer

Yojna a weekly journal

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 2Single Answer

Kurukshetra a journal on rural development is published by

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 3Single Answer

Devaluation of a currency means

A
Fixing the value of the currency in conjuction with the movement in the value of a basket of predetermined currencies
B
Reduction in the value of a currency vis-à-vis major internationally traded currencies
C
Fixing the value of currency in multilateral consultaion with the IMF the World Bank and major trading partners
D
Permitting the currency to seek its worth in the international market

Question 4Single Answer

In India rural incomes are generally lower than the urban incomes, which of the following reasons account for this
1. a large number of farmers are illiterate and know little about scientific agriculture
2. prices of primary products are lower than those of manufactured products
3. Investments in agriculture has been low when compared to investment in industry

A
1 and 3
B
2 and 3
C
1 and 2
D
1,2 and 3

Question 5Single Answer

Which of the following programmes aims at the promotion of savings among rural women

A
Rashtriya Mahila Kosh
B
Indira Mahila Yojna
C
Jawahar Rozgar Yojna
D
Mahila Samridhi Yojna

Question 6Single Answer

What is Net National Product

A
the money value of final goods and services produced annually in the economy
B
the money value of annual service generation in the economy
C
the money value of tangible goods produced annually in the economy
D
The money value of tangible goods available in the economy

Question 7Single Answer

National income is the

A
net national product at market price
B
net national product at factor cost
C
net domestic product at market price
D
net domestic product at factor cost

Question 8Single Answer

I go to Madurai by —– Vaigai Express

A
a
B
an
C
some
D
the

Question 9Single Answer

Have the car stolen!

A
Steal the car
B
You should have the stolen car
C
Get someone to steal the car
D
They have stolen the car

Question 10Single Answer

The payment was collected by the hardworking salesman.

A
The hardworking salesman collected the payment.
B
the salesman who worked heard was able to collect the payment.
C
to collect the payment the salesman had to work hard.
D
The hardworking salesman was able to collect the payment.

Question 11Single Answer

I had to stop all my work to complete this project.

A
All other work had to be stopped to complete this project by me
B
For completing this project all other work must be stopped
C
For completing this project I had to stop all my work
D
To complete this project all other work had been stopped by me

Question 12Single Answer

They have published the names of all the successful candidates.

A
The candidates who have succeeded their names they had published.
B
The names of all the successful candidates have been published by them
C
The candidates who have succeeded their names have been published by them.
D
The names of all the successful candidate were published by them.

Question 13Single Answer

The online shopping site lowered the prices.

A
Lowering of the prices was done by the online shopping site
B
The prices were lowered by the online shopping site
C
The prices had been lowered by the online shopping site
D
The prices have been lowered by the online shopping site

Question 14Single Answer

Who taught you to drive a truck ?

A
To drive a truck by whom were you taught?
B
Driving a truck by who were you taught?
C
Driving a truck by who were you being taught?
D
By whom were you taught to drive a truck?

Question 15Single Answer

We shall invite Suresh.

A
Suresh would be invited by us
B
Suresh would have been invited by us
C
Suresh will be invited by us
D
Suresh will have been invited by us

Question 16Single Answer

Dark clouds have overcast the evening sky.

A
By the dark clouds the evening sky was overcast.
B
The evening sky has been overcast by the dark clouds.
C
Dark clouds overcastted the evening sky.
D
The sky of the evening was overcasted by dark clouds.

Question 17Single Answer

The partners will celebrate their triumph tomorrow.

A
The triumph would be celebrated by the partners a day before
B
The triumph would be celebrated by the partners a day after
C
The triumph would have been celebrated by the partners a day after
D
The triumph will have been celebrated by the partners tomorrow

Question 18Single Answer

How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?

A
Two
B
Three
C
Five
D
Four
E
None of these

Question 19Single Answer

Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is

A
True
B
False
C
Uncertain
D
None

Question 20Single Answer

If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.

Question 21Single Answer

How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?

A
None
B
One
C
Two
D
Three
E
More than three

Question 22Single Answer

How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 23Single Answer

How many meaningful words can be made from the letters ‘LMEA’ using each letter only once in each word?

A
None
B
One
C
Two
D
Three
E
More than three

Question 24Single Answer

If it is possible to make only one meaningful word with the first, the second, the seventh and the eighth letters of the word TEMPORAL, which of the following will be the first letter of that word? If more than one such word can be made, give ‘Y’ as the answer and if no such word can be made, give ‘X’ as the answer.

Question 25Single Answer

If the letters of the word HANDOVER are arranged alphabetically from left to right how many letters will remain at the same position?

A
None
B
One
C
Two
D
Three
E
More than three

Question 26Single Answer

How many such pairs of letters are there in the word EXCURSION, each of which has as many letters between them in the word as they have in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 27Single Answer

If it is possible to make only one meaningful word with the first, the second, the third, the sixth and the eighth letters of the word DEVIATION first letter of that word is your answer? If more than one such word can be made formed your answer is ‘A’ and if no such word can be formed your answer is ‘B’.

Question 28Single Answer

Passage :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .

Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?

Question 29Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?

A
SUM
B
BIG
C
Both BIG and THE
D
FOR
E
Both FOR and BIG

Question 30Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?

A
AND
B
FOR
C
THE
D
BIG
E
SUM

Question 31Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?

A
None
B
One
C
Two
D
Three
E
Four

Question 32Single Answer

Passage :

How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?

A
Two
B
Five
C
Six
D
Nine
E
Three

Question 33Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 34Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 35Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 36Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 37Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 38Single Answer

If 3⁴X^-2 = 729, then find the value of X.

Question 39Single Answer

Convert 0.6 into fraction ?

A
3/5
B
2/3
C
4/5

Question 40Single Answer

The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?

A
169
B
36
C
196
D
Can not say

Question 41Single Answer

If a and b are positive integers, such that ab = 125, then (a-b)^a+b-4= ?

A
16
B
25
C
28
D
30

Question 42Single Answer

If x^*y = x² + y² – xy, then value of 9^*11 is

A
93
B
103
C
60.5
D
121

Question 43Single Answer

Passage :

information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values

Chemistry but not in Physics.

A
318
B
198
C
213
D
206

Question 44Single Answer

Passage :

Direction: information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values

Physics or Maths but not in Chemistry.

A
558
B
718
C
628
D
None of these

Question 45Single Answer

Passage :

For the next four question that follow:
In a city, three daily newspapers A, B, C are published, 42% read A; 51% read B; 68% read C; 30% read A and B; 28% read B and C; 36% read A and C; 8% do not read any of the three newspapers.

Let x% people read all the three newspapers.
Since 8% people do not read any newspapers.
(x – 24) + (x – 7) + (x + 4) + (30 – x) + (36 – x) + (28 – x) + x = 92
→ x + 98 – 31 = 92
→ x = 92 – 67 = 25

What is the percentage of persons who read all the three papers ?

A
20%
B
25%
C
30%
D
40%

Question 46Single Answer

Passage :

For the next four : question that follow :
In a city, three daily newspapers A, B, C are published, 42% read A; 51% read B; 68% read C; 30% read A and B; 28% read B and C; 36% read A and C; 8% do not read any of the three newspapers.

What is the percentage of persons who read only two papers?

A
19%
B
31%
C
44%
D
None of these

Question 47Single Answer

Passage :

What is the percentage of persons who read only one paper ?

A
38%
B
48%
C
51%
D
None of these

Question 48Single Answer

What is the theme of World Intellectual Property Day 2023, which is observed annually on April 26 for creating awareness of intellectual property and its safeguarding ?

A
IP and Youth: Innovating for a Better Future
B
IP and SMEs: Taking Your Ideas to Market
C
Innovate for a Green Future
D
Women and IP: Accelerating Innovation and Creativity

Question 49Single Answer

Which of the following countries will host the third in-person Quad Summit on May 24, 2023 ?

A
India
B
The USA
C
Japan
D
Australia

Question 50Single Answer

In April 2023, the State Bank of India (SBI) has opened its fourth exclusive branch for startups. In this context, which of the following Indian cities does not have SBI’s startup branch ?

A
Mumbai
B
Bengaluru
C
New Delhi
D
Chennai

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Chemical

Question 51Single Answer

Four identical cones with base diameter of 10 cm are compactly placed inside a box in uprigh position.What will be the area of sqaure (in cm²) formed by connecting tips the cones ?

A
400
B
144
C
100
D
25

Question 52Single Answer

How many hollow spheres having inner radius of 1 cm can be completely filled by transferring water from a completely filled hollow sphere having inner diameter of 20 cm ?

A
400
B
100
C
1000
D
8000

Question 53Single Answer

The two identical bags and two identical boxes are placed as shown. The top of the stable is at the height of.

A
65 cm
B
70 cm
C
75 cm
D
80cm

Question 54Single Answer

The graph shows the cumulative number of deaths during a pandemic. The time intervals shown in the graph are equal. The largest increase in the number of deaths was during the period.

A
T1 to T2
B
T2 to T3
C
T3 to T4
D
T4 to T5

Question 55Single Answer

The period of a pendulum is given as T = 2

(l/g)^½ where g = 9.81 m/s² and

=3.1416.The period of a pendulum of length 1 m correct to the first place of decimal in seconds.

A
1.8
B
1.9
C
2.0
D
2.1

Question 56Single Answer

The sides a, b and c of a ΔABC satisfy the equation (a – 8)² + (b – 15)² + (c – 17)² = 0. Then ΔABC is z :

A
equilateral
B
right – angled
C
isosceles
D
obtuse angled trangle

Question 57Single Answer

In the given substraction problem, each letter represents a digit between 0 and 9 :

	T	A	S	5
-		R	S	R
	2	T	A	9

The values of R, A and T are, respectively :

A
6, 9, 3
B
4, 8, 3
C
6, 9, 2
D
4, 2, 9

Question 58Single Answer

Three apartments,which are in a row, are occupied by Umar, Ramesh and John. Only one of them is the landlord, whose apartment is at one end. Ramesh's apartment is not next to John's apartment.The apartment on the left is not the landlord's, the one isn the middle is not Ramesh's and the one on the right is not John's.Who is the landlord ?

A
Umar
B
Ramesh
C
John
D
The above information is insufficient to identify the landlord

Question 59Single Answer

At a book–signing session, there are 5 authors who write only single-author books and another 5 who write only in pairs.Every author signs books that are authored or co-authored by him/her. In order to collect signatures of all 10 authors, in th best possible scenario, the minimum number of books that need to be purchased is :

A
5
B
6
C
8
D
10

Question 60Single Answer

The gross domestic products (GDP) and total populations of four countries A, B, C and D in appropriate units are shown in the accompanying figures

Countries with the highest and the lowest per capita GDP are, respectively.

A
A and C
B
A and D
C
C and D
D
C and B

Question 61Single Answer

In a class of 84 students, 29 failed in Science (S), 43 failed in Maths (M) and 17 students passed in both.Which of the following Venn diagrams is the correct depiction of the situation ?

Question 62Single Answer

A milk vendor has 50 L of milk and supplies 5 L to every customer. After each transaction he adds 5L of water. What is the percentage of milk contained in a litre of solution purchased by the fifth customer ?

A
65.6%
B
72.9%
C
83.1%
D
59.4%

Question 63Single Answer

An expenditure of Rs. 96 was supposed to be shared equally by all the students in a class. Since four students didn't contribute, the remaining students had to contribute an additional amount of Rs. 4 each. how many students contributed ?

A
8
B
12
C
16
D
24

Question 64Single Answer

While calculating the average of twenty 2-digit numbers, digits of one of the numbers got interchanged because of which the average reduced by 1.8. The difference in the values of the digits of the number that were interchanged is.

Question 65Single Answer

Based on the clue given in statements A to D, find the correct 3-digit number.
1. Two of the digits are present in the number 395, but they are not placed correctly.
2. One of the digits is present in the number 718 and is placed correctly.
3. None of the digits is present in the number 148
4. One of the digits is present in the number 835 is placed correctly.

A
739
B
735
C
379
D
359

Question 66Single Answer

Which of the following plots represents the function y = x ?

Question 67Single Answer

1% of the population of a country is suffering from a disease.One person undergoes a diagnostic test which has 98% reliability (i.e., 98% of people who are sick test positive and 98% of the healthy people test negative).If the person is tested positive,the chances that The person is acually having the disease is, approximately :

A
98%
B
50%
C
75%
D
33%

Question 68Single Answer

A man of height 2 m looks at the top of a 40m tall building from some distance. The angle of elevation of his line of sight is 45^o. When he further moves away from the building by a distance x, the angle of elevation becomes 30°. Then x is approximately :

A
20m
B
12m
C
34m
D
28m

Question 69Single Answer

In an 800 m wide river, water flows at a speed of 9 km/h. A man can row a boat in still water with a speed of 15 km/h. If the path of the boat is maintaind perpendicular to the flow of the water, then how long will the man take to cross it ?

A
12 min
B
4 min
C
6 min
D
20 min

Question 70Single Answer

On a large flat surface identical circular coins are placed in the most compact arrangement without overlapping with each other. If the number of coins available is unlimited, then the fraction of the surface area that is not covered by the coins is closest to :

Question 71Single Answer

For the given reaction [*Co(L)n]²⁺+ [Co(L)n]³⁺ → [*Co(L)n]³⁺ + [Co(L)n]²⁺ the correct statement with respect to the rate of electron transfer process is o-phen = o-phenanthroline; *Co is labelled atom :

A
Fast electron transfer; L = NH₃; n = 6
B
Slow electron transfer; L = o-phen; n = 3
C
Very slow electron transfer; L NH₃; = n=6
D
Very slow electron transfer; L = o-phen; n = 3

Question 72Single Answer

Choose the correct order of energy of 2σ_g and 1_u molecular orbitals for B₂, C₂ and O^g₂:

A
2σ_g > 1_u for all the three
B
2σ_g > 1_u for B₂ and C₂ only
C
1_u > 2σ_g for C₂ and O₂ only
D
2σ_g > 2_u for B₂ and O₂ only

Question 73Single Answer

The pair in which both actinides show +3 oxidation state only is :

A
Ac and Lr
B
Ac and No
C
Cm and Bk
D
Cm and Lr

Question 74Single Answer

The complex (es) showing activity against cancerous cells is/are :

A
(a) only
B
(a) and (b) only
C
(a) and (c) only
D
(a), (b) and (c)

Question 75Single Answer

Consider the nuclear reaction ₉₂X²³⁴ + ß + α → Y + γ + 2ß⁺ Y is :

A
₉₂Y²³⁸
B
₉₁Y²³⁸
C
₉₃Y²³⁶
D
₉₄Y²³⁸

Question 76Single Answer

Correct statement/s among the following with respect to ionization energy (IE) is/are :
a. (IE₁ + IE₂ + IE₃) for indium is more than that of aluminium
b. IE₁ of scandium is higher than that of cobalt
c. IE₁ of gallium is lower than that of selanium
d. IE₁ of nitrogen is greater than that of oxygen

A
b and d
B
c and d
C
a and d
D
a and c

Question 77Single Answer

The reason for significantly high solubility of AgClO₄ in benzene than in alkane solvents is :

A
Alkane solvents are non-polar
B
Benzene is an aprotic solvent
C
PhAg is formed
D
Benzene acts as a soft base

Question 78Single Answer

Correct statement for 'Inductively Coupled Plasma Atmoic Emission Spectroscopy' is :

A
It is unsuitable for all non-metals
B
Simultaneous determination of only metals is possible
C
Induction coil stabilizes plasma
D
Oxide formation lowers atomization of metals

Question 79Single Answer

The number of geometrical isomers of the complex [RhH(C≡CR)₂(PMe₃)₃] is :

Question 80Single Answer

I₂ is violet in the solid as well as in gas phase.However in acetone or ethanol,it turns brown.Choose the correct statement (s) for this colour change :
a. Dissociation of I₂ in atomic state
b. Interaction of low-lying σ*-orbital of iodine with lone pair of O (Solvent)
c. Formation of a charge-transfer complex

A
(a) only
B
(b) only
C
(a) and (b) only
D
(b) and (c) only

Question 81Single Answer

The pair of compounds in which both members show LMCT band in their electronic spectra is :

A
[FeCl₄]^2– and [Fe(bpy)₃]²⁺
B
[FeBr₄]^2– and [TcO₄]^–
C
[ReO₄]^– and [Ru(bpy)₃]²⁺
D
[Fe(phen)₃]²⁺ and [FeCl₄]^2–

Question 82Single Answer

During the binding of O₂ to myoglobin (Consider 'heme' in xy-plane), the molecular orbital of O₂ and atomic orbital of Fe involved in the formation of σ-bond is :

A
* and d_z²
B
* and d_xz
C
and d_xz
D
and d_z²

Question 83Single Answer

During the binding of O₂ to myoglobin (consider 'heme' in xy-plane), the molecular orbital of O₂ and atomic orbital of Fe involved in the formation of the σ-bond is :

A
I > II > III
B
I ≈ II ≈ III
C
I > II ≈ III
D
I < II ≈ III

Question 84Single Answer

The correct IUPAC name for the following molecule is :

A
1- Propyl – 2 – ethyl – 4. 4 – dimethylcyclohept – 1-ene
B
1-Ethyl-4, 4-dimethyl-1-propylcyclohept-1-ene
C
3-Ethyl-1, 1-dimethyl-4-propylcyclohept-3-ene
D
1, 1-Dimethyl-3-ethyl-4-propylcyclohept-3-ene

Question 85Single Answer

The stereochemical relationship of H_a and H_b in the following molecule is :

A
Enantiotopic
B
Homotopic
C
Diastereotopic
D
Constitutionally heterotopic

Question 86Single Answer

The correct order of stability of the carbocations A-C is :

A
C > A > B
B
A > C > B
C
B > C > A
D
C > B > A

Question 87Single Answer

The correct statement for the orientation of the bromine atoms in the most stable conformation of A and B is :

A
Axial in both A and B
B
Axial in A and equatorial in B
C
Equatorial in both A and B
D
Equatorial in A and axial in B

Question 88Single Answer

The major product formed in the following reaction is :

Question 89Single Answer

The following carboxylic acids undergo decarboxylation upon heating.The ease of decarboxylation is in the order :

A
B > A > C
B
C > B > A
C
A > C > B
D
C > A > B

Question 90Single Answer

The HOMO of

-molecular orbitals of methalazide is :

Question 91Single Answer

The following transformation involves a series of :

A
Electrocyclic ring-opening and closing reactions
B
Cycloaddition and cyclore version reaction
C
Sigmatropic rearrangements
D
Cheletropic addition and elimination reactions

Question 92Single Answer

The synthetic equivalent of the given synthon is :

A
t-butyl isocyanide
B
t-butyl cyanide
C
t-butyl cyanate
D
t – butyl isocyanate

Question 93Single Answer

The correct order of the pK_a of the following compounds is :

A
C > B > A
B
A > C > B
C
B > A > C
D
A > B > C

Question 94Single Answer

Muscone is a :

A
Terepenoid
B
Steroid
C
Polyketide
D
Flavonoid

Question 95Single Answer

The natural product that gives a signal at ẟ 218 ppm in its ¹³C NMR Spectrum is :

A
α - pinene
B
Camphor
C
Geraniol
D
Carvone

Question 96Single Answer

The correct order of carbonyl stretching frequency for the given compounds is :

A
A > B > C
B
B > C > A
C
C > A > B
D
B > A > C

Question 97Single Answer

The expectation value of p² of a particle in a cubic box of side l, having the wave function

Question 98Single Answer

For the d³ electron configuration,the ground state term symbol is :

A
⁴F_1/2
B
⁴F_3/2
C
⁴F_7/2
D
⁴F_9/2

Question 99Single Answer

The total bond order between adjacent carbon atoms of benzene is :

A
0.5
B
2
C
1.5
D
2.5

Question 100Single Answer

The following is the character table fo the C_2v, point group :

There are two functions f₁ and f₂ belonging to A₂ and B₁ representations, respectively. The correct option for the product of two functions f₁ and f₂ and the integral f f₁ f₂ dπ is

A
The product belongs to A₂ representation and the integral is non-zero
B
The product belongs to B₂ representation and the integral is zero
C
The product belongs to A₁ representation and the integral is zero
D
The product belongs to B₁ representation and the integral is non-zero

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